12215310 has 16 divisors (see below), whose sum is σ = 29316816. Its totient is φ = 3257408.

The previous prime is 12215297. The next prime is 12215317. The reversal of 12215310 is 1351221.

It is a super-2 number, since 2×12215310² = 298427596792200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12215310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203559 + ... + 203618.

It is an arithmetic number, because the mean of its divisors is an integer number (1832301).

Almost surely, 2^12215310 is an apocalyptic number.

12215310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12215310 is an abundant number, since it is smaller than the sum of its proper divisors (17101506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12215310 is a wasteful number, since it uses less digits than its factorization.

12215310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407187.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 12215310 is about 3495.0407722944. The cubic root of 12215310 is about 230.3040088290.

Adding to 12215310 its reverse (1351221), we get a palindrome (13566531).

The spelling of 12215310 in words is "twelve million, two hundred fifteen thousand, three hundred ten".